Impact of ultraviolet-absorbing 2-hydroxy-4-quaternaryammoniumalkoxy benzophenone motif on photodegradation of disulfoton: a case study

• Published in: Environmental science and pollution research international Vol. 30; no. 60; pp. 124704 - 124713
• Main Authors: Deota, Pradeep T., Parmar, Hemant S., Patel, Gautam M., Bhatt, Gaurang J.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-12-2023; Springer Nature B.V
• Subjects: Absorbers; Ammonium; Aquatic Pollution; Atmospheric Protection/Air Quality Control/Air Pollution; Benzophenone; Benzophenones - chemistry; Case studies; Disulfoton; Earth and Environmental Science; Ecotoxicology; Environment; Environmental Chemistry; Environmental Health; Environmental science; Green Technology and Industrial Revolution 4.0 for a Greener Future; Ingestion; Insecticides; Light; NMR; Nuclear magnetic resonance; Pesticides; Photodegradation; Photolysis; Ultraviolet radiation; Ultraviolet Rays; Waste Water Technology; Water Management; Water Pollution Control; Photodegradation; Quaternary ammonium salts; 2,4-dihydroxybenzophenone; Disulfoton; Integrated pest management; Pesticides
• ISSN: 1614-7499; 0944-1344; 1614-7499
• DOI: 10.1007/s11356-022-21247-1

Pesticide deposits post-treatment and before diffusing inside the plants are exposed to sunlight. Many of them degrade into a variety of photoproducts that may be harmful to living beings through accidental ingestion. The addition of ultraviolet light absorbers to the pesticide formulations is an attractive strategy to prevent photodegradation of the pesticides. Water-soluble quaternary ammonium ultraviolet light absorbers (QAUVAs) were synthesized from 2,4-dihydroxy benzophenones (BP-1) and their structures were confirmed by
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H NMR,
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C NMR, UV, and FTIR. A cost-saving approach for the photoprotection of disulfoton insecticide using these QAUVAs is presented. All the four QAUVAs exhibit excellent UV screening effect. The insecticide disulfoton was recovered in much higher amounts (22.27 ~ 25.64% higher than control) when it was irradiated in the presence of QAUVAs in comparison with the amount of recovery of pesticide exposed in absence of them.